Hello Morton. This will not be an HDCP issue with your projector. HDCP is an input process to the ATEM and not the output. Make sure you test with a short HDMI cable like 3 feet just to make sure it is not a cable length issue. There are internal projector settings that should be checked. Also make sure the ATEM 1080 frame rate is set to one of the supported frame rates in your projector. Not all rates are supported according to the projector manual.

Here's a test. If you have an HDMI source that directly works with the projector, connect it to HDMI Input #1 on the Mini. Set the Mini HDMI output to Input #1 Direct and see if that works on the Projector. I would think it has to but it's worth a test.

Sometimes a different startup sequence of the hardware might help, also make adjustments in settings of software drivers while devices are on, and check with switched on hardware if settings are still the same, from previous "sessions"

btw. you say "projectors" the ATEM mini has only one HDMI output..... you know for sure this HDMI switch is working O.K. ? (and has correct specs for each projector ?does each single projector work directly on the HDMI output of the ATEM mini ?

I do not have the Atem Mini with me these days, but as soon I'm back I will checkout your suggest.

Eric-Jan wrote:.....btw. you say "projectors" the ATEM mini has only one HDMI output..... you know for sure this HDMI switch is working O.K. ? (and has correct specs for each projector ?does each single projector work directly on the HDMI output of the ATEM mini ?

I've tried with only one projector connected directly to HDMI output, also without succes

Gary Adams wrote:Here's a test. If you have an HDMI source that directly works with the projector, connect it to HDMI Input #1 on the Mini. Set the Mini HDMI output to Input #1 Direct and see if that works on the Projector. I would think it has to but it's worth a test.

I have exactly the same problem. I also tried two different, so called "EDID managers", with no luck.The only solution I have for this problem and the only hint what may be wrong, is that when I connect HDMI Output from the ATEM mini through the Blackmagicdesign Video Assist passthrough monitor and THEN to the projector - it works.On the Video Assist I can see that it recognized 1080p signal and thats it.It works with TVs, computer monitors, camera monitors... everything but projector. Mine is Epson EB-2250U.I asked BMD support about how Video Assist may change the signal (even the slightest hint here would be helpful) some time ago but without any answer.Maybe with that additional knowledge you will come up with something and share your ideas.

Eric-Jan wrote:Sometimes a different startup sequence of the hardware might help, also make adjustments in settings of software drivers while devices are on, and check with switched on hardware if settings are still the same, from previous "sessions"

btw. you say "projectors" the ATEM mini has only one HDMI output..... you know for sure this HDMI switch is working O.K. ? (and has correct specs for each projector ?does each single projector work directly on the HDMI output of the ATEM mini ?

Now I've tried without success But maybe I did an important obsevation - When I try to change the resolution on my graficcard to any resolution with refresh rate 59 or 60 Hz, the active resolution on the projektor always will be 1920x1200.But - if I change to ex. 1920x1080P 30 Hz, the active resolution on projector also will be 1920x1080

But it does not solve my problem, because the projector do not "remember" this setting.

The projector does support those resolutions, but not at just any frame rate - it only supports a limited set of frame rates within that resolution when coming from HDMI. Only three of them match what is supported by the ATEM Mini.

So I recently had the same issue with a rental projector (Panasonic pt-vmz60)It was a small room that added switching between 2 laptops last minuteFrom the Atem Mini to the projector a 50ft HDMI .The HDMI would work from laptop direct to projector but once connected to atem Mini it would not work.What made everything work was me putting a DAC-70 in between the atem Mini to the projector.I have to test to see if a HDMI-DA would fix it as well but it was a time crunch moment and I did not care how it worked but as long as it worked.So atem Mini HDMI out to DAC-70 HDMI in then DAC-70 HDMI out to projector HDMI inIf anyone has time to test a HDMI DA or any other device please post.Maybe the HDMI out from the Mini needed a boost idk to be honest

The HDMI output is used to send send to LENKENG HDBaseT over TCP/IP for multiple TV displays around our campus.

When I connect the sources directly to the HDBaseT Splitter, projectors and TV work perfectly.

When I connect sources to ATEM Mini, the projectors do not work, but the TVs work perfectly. (If i connect a monitor to the ATEM Mini no problems.)

Could it be that the output of the ATEM Mini is not compatible with the projectors and that a scaler is required? I don't believe it is an HDBaseT or HDCP issue, as there is no issue when source directly connected.

The HDMI output is used to send send to LENKENG HDBaseT over TCP/IP for multiple TV displays around our campus.

When I connect the sources directly to the HDBaseT Splitter, projectors and TV work perfectly.

When I connect sources to ATEM Mini, the projectors do not work, but the TVs work perfectly. (If i connect a monitor to the ATEM Mini no problems.)

Could it be that the output of the ATEM Mini is not compatible with the projectors and that a scaler is required? I don't believe it is an HDBaseT or HDCP issue, as there is no issue when source directly connected.

Thanks for your assistance

For what it is worth for anyone else having this issue, I resolced it by installing a Decimator HD-LX bi-directional converter between Mini ATEM and HDBaseT splitter. That resolved the problem. The Mini ATEM output is 1080p 50fps, and the converter output is 1080p 50 fps, but for some reason it makes all the difference.

What i now realize is, that what the original poster is looking for, is the HDMI version, a lot is to find on the internet about that, but will it always be: the latest version will be the best one, and all connections/cables should be of the same/latest version ?Also, could the CEC "feature" sabotage "things" ? i guess switching (off) this feature would help ?

btw: HDCP is used to exchange (while protecting) copyrighted material between devices, so i guess HDCP isn't in play when using your own source video material. (or could a bad quality signal trigger HDCP ?)

Poor quality signal should not add HDCP to a signal that does not already have it; if anything it might prevent an existing HDCP handshake from working, but then it wouldn't have worked through an ATEM to begin with.

Frank Engel wrote:Poor quality signal should not add HDCP to a signal that does not already have it; if anything it might prevent an existing HDCP handshake from working, but then it wouldn't have worked through an ATEM to begin with.

It also might be a colour space problem. If the projector is set to RGB colorspace it might not work with YUV colorspace. The decimator might convert it to RGB color space, retaining the original framerate and resolution. A laptop with HDMI might work without problem as it is RGB colorspace. Most Panasonic projectors give you a choice on a specific HDMI input.